Retrofit-Lite

Retrofit-Lite for Android - Lightweight HTTP client based on OKHttp and Retrofit.

Initialization

1. Add the below repository into your project level build.gradle file.

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

2. Add the below dependency into your module level build.gradle file.

dependencies {
    ...
    implementation 'com.github.aslamanver:retrofit-lite:v2.0.6'
}

Simple Usage

For the testing purpose we used Postman-Echo URL as APIClient.API_URL = "https://postman-echo.com", it can be replaced with your server address once tested.

GET method with parameter

APITask.from(context).sendGET(101, "https://your-url.com/?anyparam=anything", null, new APITask.Listener() {
    @Override
    public void onSuccess(int pid, int status, Map<String, String> headers, String body) {

    }

    @Override
    public void onFailed(int pid, Exception ex) {

    }
});

POST method with parameter

APITask.from(this).sendPOST(201, "https://your-url.com", "{ \"leopard\" : \"animal\" }", null, new APITask.Listener() {
    @Override
    public void onSuccess(int pid, int status, Map<String, String> headers, String body) {
    
    }

    @Override
    public void onFailed(int pid, Exception ex) {

    }
});

The object can also be sent in the sendPOST as serialized, please refer the section 10. POST JSON Text with Object

Response callbacks

These methods are called with the process id which is given when initiated and the status code of the response.

void onSuccess(int pid, int status, Map<String, String> headers, String body);
void onFailed(int pid, Exception ex);

---

Advanced usage

Implement the APITask.Listener with the activity class or you can directly pass into the method.

1. GET Request Data

Simple GET request with parameters

APITask.from(this).sendGET(101, APIClient.API_URL + "/get?leopard=animal", null, this);

2. GET Request Headers

Simple GET request with request headers

Map<String, String> headers = new HashMap<>();
headers.put("leopard", "animal");

APITask.from(this).sendGET(102, APIClient.API_URL + "/headers", headers, this);

3. GET Response Headers

Simple test of response headers

APITask.from(this).sendGET(103, APIClient.API_URL + "/response-headers?leopard=animal", null, this);

4. GET Response Status Code

400 Status code

APITask.from(this).sendGET(104, APIClient.API_URL + "/status/400", null, this);

5. POST Raw Text

Plain text on POST method

APITask.from(this).sendPOST(201, APIClient.API_URL + "/post", "Leopard is an animal", null, this);

6. POST JSON Text

JSON text on POST method

APITask.from(this).sendPOST(201, APIClient.API_URL + "/post", "{ \"leopard\" : \"animal\" }", null, this);

7. POST Request Headers

POST request with headers

Map<String, String> headers = new HashMap<>();
headers.put("leopard", "animal");

APITask.from(this).sendPOST(203, APIClient.API_URL + "/post", "{}", headers, this);

8. Basic Auth

Basic autentication method with header

Map<String, String> headers = new HashMap<>();
headers.put("Authorization", "Basic cG9zdG1hbjpwYXNzd29yZA==");

APITask.from(this).sendGET(204, APIClient.API_URL + "/basic-auth", headers, this);

9. DigestAuth Success

Simple autentication method with header

Map<String, String> headers = new HashMap<>();
headers.put("Authorization", "Digest username=\"postman\", realm=\"Users\", nonce=\"ni1LiL0O37PRRhofWdCLmwFsnEtH1lew\", uri=\"/digest-auth\", response=\"254679099562cf07df9b6f5d8d15db44\", opaque=\"\"");

APITask.from(this).sendGET(205, APIClient.API_URL + "/digest-auth", headers, this);

10. POST JSON Text with Object

Serialize the object using GSON and implement the APITask.Request with the class.

public class SampleReq implements APITask.Request {

    @Expose
    String email;

    @Expose
    String password;
}

SampleReq req = new SampleReq();
req.email = "google@gmail.com";

APITask.from(this).sendPOST(206, APIClient.API_URL + "/post", req, null, this);

11. POST Empty Body Method

POST method without any parameters

APITask.from(this).sendPOST(207, APIClient.API_URL + "/post", null, this);

12. Timeout

Custom timeout, default is 1 minute

APIClient.ConfigBuilder clientBuilder = new APIClient.ConfigBuilder()
                    .setTimeout(3000);

APITask.from(this, clientBuilder).sendGET(301, APIClient.API_URL + "/delay/5", null, this);

13. Host Verification

Custom host name verification

APIClient.ConfigBuilder clientBuilder = new APIClient.ConfigBuilder()
                    .setHostnameVerifier(new APIClient.ConfigBuilder.HostnameVerifier() {
                        @Override
                        public boolean onVerify(String hostname, SSLSession session) {
                            return false;
                        }
                    });

APITask.from(this, clientBuilder).sendGET(302, APIClient.API_URL + "/get", null, this);

14. No Callback

Set the listener to null to ignore callbacks

APITask.from(this).sendGET(500, APIClient.API_URL + "/get", null, null);

Synchronous HTTP requests

Sync HTTP requests should be called inside a new thread.

APITask.SyncResponse syncResponse = APITask.from(getApplicationContext()).sendPOSTSync(201, APIClient.API_URL + "/post", "Leopard is an animal", null);

The method returns a sync object as APITask.SyncResponse syncResponse which contains the HTTP results as below.

The response object of the Sync HTTP request

APITask.SyncResponse syncResponse

It returns true if the HTTP request is successful

syncResponse.success

Process ID

syncResponse.pid

The status code of the HTTP response

syncResponse.status

Response headers

syncResponse.headers

Body of the HTTP response

syncResponse.body

It gives an exception when the success return false

syncResponse.ex

Refer the example for Sync : Example

Setting sslSocketFactory

APIClient.ConfigBuilder clientBuilder = new APIClient.ConfigBuilder()
    .setSSLSocketFactoryGenerator(new APIClient.ConfigBuilder.SSLSocketFactoryGenerator(sslSocketFactory, trustManager));

Setting custom okHttpClient

APIClient.ConfigBuilder clientBuilder = new APIClient.ConfigBuilder()
        .setOkHttpClientModifier(new APIClient.ConfigBuilder.OkHttpClientModifier() {
            @Override
            public void onSet(okhttp3.OkHttpClient.Builder okHttpClientBuilder) {
                // Modify the okHttpClientBuilder
            }
        });